Bulwark Flame Resistant 6 oz Nomex IIIA Snap-Front Uniform Shirt 93% Nomex Aramid/5% KevlarAramid/2% Other Fiber Made in the USA or Imported Banded, topstitched collar Topstitched cuff with adjustable snap closure Front with snap closure Fabric made of 6 ounces, Nomex IIIA (93 percent Nomex aramid/5 percent Kevlar aramid/2 percent other fiber) Arc rating ATPV 5.6 calories/sq cm